<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>10_过渡&动画1</title>
  <style>
    /*指定过渡样式*/
    .xxx-enter-active, .xxx-leave-active {
      transition: opacity 1s
    }
    /*指定隐藏时的样式*/
    .xxx-enter, .xxx-leave-to {
      opacity: 0;
    }


    .move-enter-active {
      transition: all 1s
    }

    .move-leave-active {
      transition: all 3s
    }

    .move-enter, .move-leave-to {
      opacity: 0;
      transform: translateX(20px)
    }
  </style>
</head>
<body>
<!--
1. vue动画的理解
  操作css的trasition或animation
  vue会给目标元素添加/移除特定的class
2. 基本过渡动画的编码
  1). 在目标元素外包裹<transition name="xxx">
  2). 定义class样式
    1>. 指定过渡样式: transition
    2>. 指定隐藏时的样式: opacity/其它
3. 过渡的类名
  xxx-enter-active: 指定显示的transition
  xxx-leave-active: 指定隐藏的transition
  xxx-enter: 指定隐藏时的样式
-->



<div id="demo">
  <button @click="show = !show">Toggle</button>
  <transition name="xxx">
    <p v-show="show">hello</p>
  </transition>
</div>

<hr>
<div id="demo2">
  <button @click="show = !show">Toggle2</button>
  <transition name="move">
    <p v-show="show">hello</p>
  </transition>
</div>


<script type="text/javascript" src="../js/vue.js"></script>
<script type="text/javascript">
  new Vue({
    el: '#demo',
    data: {
      show: true
    }
  })

  new Vue({
    el: '#demo2',
    data: {
      show: true
    }
  })

</script>
</body>
</html>